| Fair Price Electric | Pedro Luis Penate | — | (925) 834 9520 | Electricians | Concord · Contra Costa County | — | — |
| Fairview Heating & Air Conditioning | Robert Charles Conner | — | (925) 625 4963 | HVAC | Oakley · Contra Costa County | — | — |
| Fairway | Rick Thomas Heffern | — | (510) 471 5911 | HVAC | Discovery Bay · Contra Costa County | — | — |
| Falcon Electrial Construction | Douglas Paul Falkowski | — | (510) 910 3874 | Electricians | Walnut Creek · Contra Costa County | — | — |
| Family Heating And Cooling LLC | Todd Vincent Graham | — | (925) 206 5518 | HVAC | Discovery Bay · Contra Costa County | — | — |
| Fancy Construction | Juan Carlos Ramirez | interested@domainmarket.com | (925) 490 8282 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Farallon Gardens INC | Mcgrath Mathew | mathew@farallongardens.com | (510) 241 5278 | Windows, patio, painters | Rodeo · Contra Costa County | — | — |
| Farias Landscape INC | Jose Manuel Farias Barragan | — | (925) 339 6176 | Windows, patio, painters | Pittsburg · Contra Costa County | — | — |
| Fars Construction | Sadighpour Fariborz | — | (925) 676 6669 | GC, remodel, ADU | Pacheco · Contra Costa County | — | — |
| Fastsigns 65301 | Jens Lisell Erickson | — | (925) 755 7446 | Other | Antioch · Contra Costa County | — | — |
| Fastsigns Concord | Gregory Scott Dennison | — | (925) 317 1000 | Other | Concord · Contra Costa County | — | — |
| Fasttrak Construction | Aurelio Cardenasgonzalez | — | (214) 638-0525 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Faten Fawzy | Faten Fawzy | — | (925) 357 7555 | Other | Danville · Contra Costa County | — | — |
| Favian Pool Plumbing LP | Jose Guadalupe Favian Elizondo | — | (925) 428 8926 | Other | Antioch · Contra Costa County | — | — |
| Fcr Fence & Deck | Sean Michael Gentile | — | (925) 655 7528 | GC, remodel, ADU | Martinez · Contra Costa County | — | — |
| Fdmr A Valley Link Jv | Track Services INC Railworks | — | (707) 742 6000 | Other | Concord · Contra Costa County | — | — |
| Fdr Drywall & Taping INC | Frank Herculano Silva | — | (925) 775 5152 | Other | Antioch · Contra Costa County | — | — |
| Felix's Painting Ca Corp | Felix Pereda Juan | — | (925) 360 5997 | Windows, patio, painters | Antioch · Contra Costa County | — | — |
| Felso Construction | David Michael Felso | — | (925) 222 0695 | GC, remodel, ADU | Moraga · Contra Costa County | — | — |
| Fence Dr | Fence Dr | — | (925) 432 6347 | Other | Pittsburg · Contra Costa County | — | — |
| Fenix General Contractor | Lilia Gomez | — | (925) 508 9200 | GC, remodel, ADU | Oakley · Contra Costa County | — | — |
| Fenton Construction | Stephen Frederick Fenton | — | (925) 596 0456 | GC, remodel, ADU | Danville · Contra Costa County | — | — |
| Fer Construction | Damian Fernando | info@fer-construction.com | (925) 759 6417 | GC, remodel, ADU | Oakley · Contra Costa County | — | — |
| Feraru & Associates Building And Design INC | Sorin Marian Feraru | — | (510) 228 7366 | GC, remodel, ADU | Richmond · Contra Costa County | — | — |
| Fermo General Engineering Corp | Alejandro Sr| Pulido-fernandez Pastor Alejandro Pulido Fernandez | — | (707) 815 4831 | Other | Pinole · Contra Costa County | — | — |
| Fernandez Garden Of Eden INC | Bernardo Joan Fernandez Godinez | — | (925) 595 9499 | Windows, patio, painters | Pittsburg · Contra Costa County | — | — |
| Fernando Duenas Window Coverings | Fernando Duenas Window Coverings | — | (510) 734 4585 | Other | San Pablo · Contra Costa County | — | — |
| Ferreira's Heating And Air Conditioning INC | Lenny Thomas Ferreira | — | (925) 306 2865 | HVAC | Concord · Contra Costa County | — | — |
| Ferriera's Roofing | Dennis Alen Ferriera | — | (925) 676 5264 | Other roofers | Concord · Contra Costa County | — | — |
| Ferro's Woodworking | Ferro's Woodworking | — | (925) 250 4768 | GC, remodel, ADU | Martinez · Contra Costa County | — | — |
| Ferrous Studios Incorporated | Kyle Scott Reicher | — | (510) 235 2747 | GC, remodel, ADU | Richmond · Contra Costa County | — | — |
| Fertado Heating & Air | Jack Eugene Fertado | — | (925) 754 2730 | HVAC | Oakley · Contra Costa County | — | — |
| Fertiz Construction INC | Pat Dale Liske | — | (925) 252 5488 | GC, remodel, ADU | Pittsburg · Contra Costa County | — | — |
| Fg Builder | Fg Builder | — | (510) 804 9822 | GC, remodel, ADU | San Pablo · Contra Costa County | — | — |
| Fg Construction | Lisandro Farias Garcia | — | (925) 813 9284 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| Fg Landscaping | Fg Landscaping | adrianfg@sbcglobal.net | (925) 470 6278 | Windows, patio, painters | Pittsburg · Contra Costa County | — | — |
| Fgc General Construction INC | Guzman Carrion Erasmo | — | (415) 509 6010 | GC, remodel, ADU | Richmond · Contra Costa County | — | — |
| Fgg Painting INC | Garcia Fidel Gonzalez | — | (510) 355 2821 | Windows, patio, painters | Richmond · Contra Costa County | — | — |
| Fgv Construction Co | Jose Adolfo Gonzalez | — | (415) 235 2355 | GC, remodel, ADU | Richmond · Contra Costa County | — | — |
| Fibercomm Solutions | Fibercomm Solutions | — | (510) 367 9900 | Other | Concord · Contra Costa County | — | — |